Pain

Something occurred to me... 

You know how they say pain warns us of danger? That's really the second step, and it's an extrapolation from its primary function. We often feel pain after the incident--after we cut our finger; we graze our knee; we burn ourselves. Pain therefore cannot a warning. Rather, it is a reminder. It is from here that we extrapolate forward and then consider it to provide a warning about future potential pain.

I guess then it makes a bit more sense for me now...